This. Can you provide some zoomed-in screenshots of both the choppy areas and the flat areas? Keep in mind that you’re also only seeing a half-second resolution. Those flat areas likely look a lot choppier on our end.
I have seen similar choppiness in my home. I’ll look for it and see if I can ID which devices cause it. I vaguely remember seeing it with some of my audio equipment.
Some devices are noisy like that. In my case a treadmill is the best example and looks similar to your plot. Also an induction cooktop and the washing machine, but those are more of a regular waveform on top of a larger value.
Perhaps… we don’t use our gaming systems but I know our renters in the basement use theres. It seems like the choppiness is longer and at times that would be weird for gaming, but I haven’t laid close enough attention.
Here is a 20 minute window centered on the switch from choppy to smooth
For what it’s worth, this is very similar to what it looks like when my Dell Latitude 2-in-1 laptop with USB-C charger looks like when it is on. It cleans up when it is not on, but still plugged in.
If you had 2 sense monitors then you could clamp the renters breaker if it’s a single breaker feeding a subpanel. Then you could monitor theirs more accurately and just subtract their use from total at the main panel to know your use.